For my small kitchen, I wanted a small system that could remove fluoride and not require plumbing work. The Travel Berkey fits on my counter under the wall cabinets (though had to remove the knob to fit). I can fill it with a pull out faucet. The black filter needed a pass of water after priming to remove particles from production. But after about a half gallon, the water was free from chlorine and industrial dust and tasted great. Not sure if minerals from city's reservoir are still in the water, but still tastes great.
To prime the filters, I used a high-pressure squirt gun